A naked woman in red high-heeled shoes is perched on the edge of Clifton Suspension Bridge with her back pressed to the safety fence, weeping into a mobile phone. Clinical psychologist Joseph O'Loughlin is only feet away, desperately trying to talk her down. She whispers, 'you don't understand,' and jumps.Later, Joe has a visitor - the woman's teenage daughter, a runaway from boarding school. She ...